# NOCO NLX31 12V 120Ah 1600A dual-purpose LiFePO4 lithium battery

![NOCO NLX31 12V 120Ah 1600A dual-purpose LiFePO4 lithium battery](https://baterias.com/20639-home_default/battery-noco-nlx31.jpg)

> NOCO NLX31 dual-purpose LiFePO4 lithium battery (starting and deep cycle): 12 V, 120 Ah, 1,600 A starting current. BCI group 31, up to 4 in series.

**Category:** [Boat Batteries](https://baterias.com/gb/boat-batteries) → [NOCO](https://baterias.com/gb/noco)

- **Canonical URL**: https://baterias.com/gb/battery-noco-nlx31
- **Language**: en-GB
- **Brand**: NOCO
- **Reference**: BCOM-NOCO-NLX31
- **EAN**: 0046221220049
- **MPN**: NLX31
- **Last updated**: 2026-10-28
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | NOCO |
| Reference | NLX31 |
| Model | NOCO LITHIUM NLX |
| Voltage (V) | 12 V |
| Largo | 330 mm |
| Ancho | 173 mm |
| Alto | 218 mm |
| Peso | 14.97 kg |
| Tecnología | LiFePO4 |
| EAN | 0046221220049 |
| Cold cranking amps (EN) | 1600 A |
| Capacity (C20) | 120 Ah (c20) |
| Energy (Wh) | 1536 Wh |

## Quick description

**Noco NLX31 12V 120Ah** is a LiFePO4 lithium service battery for boats, designed to power onboard loads (fridge, fishfinder, GPS, lights, inverter) through deep daily discharges. It is not a starting battery: it replaces the lead-acid service bank at around 60 % less weight.

### Why this lithium marine battery?

- **Deep-cycle service bank** daily discharges to 80 % with no capacity loss
- **60 % less weight on board** the same energy as lead-acid in far less space
- **Built-in BMS, maintenance free** protects against overcharge, over-discharge and short circuit

🔌 Voltage
12 V

⚡ Capacity
120 Ah C20

📏 Dimensions
330×173×218 mm

⚙️ Technology
LIFEPO4

⚖️ Weight
14,97 kg

🏷️ Model
NOCO LITHIUM NLX

## Description

## NOCO NLX31 12V 120Ah 1600A dual-purpose LiFePO4 lithium battery

The NOCO NLX31 is a dual-purpose lithium iron phosphate (LiFePO4) battery that combines the power of a starting battery with the capacity of a deep-cycle battery. It provides 120 Ah (1,536 Wh), 1,600 A of starting current and 200 A of continuous discharge, in a BCI group 31 format.
It accepts up to 120 A of charging current (1C), allowing a full recharge in around one hour, and is rated for 2,000 cycles at 100% depth of discharge and 4,000 at 80%. Its BMS protects against over-charge, over-discharge, over-current, short circuit and cell imbalance, with continuous temperature monitoring.
Up to four units can be connected in series (up to 48 V) or in parallel. It weighs 14.97 kg.

### Features

- Dual-purpose battery: starting and deep cycle in a single unit
- Lithium iron phosphate (LiFePO4) chemistry, 12.8 V nominal
- 1,600 A starting current and 200 A maximum continuous discharge
- 2,000 cycles at 100% depth of discharge and 4,000 cycles at 80%
- Fast charging at up to 120 A (1C)
- BMS against over-charge, over-discharge, over-current, short circuit and cell imbalance, with continuous temperature monitoring and no resets
- Up to 4 batteries in series (48 V) or in parallel with NOCO NLX bus bars (sold separately)
- Four posts with interchangeable terminals: bolt, threaded stud or SAE posts
- Removable handle and engineered plastic case with internal honeycomb structure
- Lighter than a lead-acid battery and free from sulphation

### Technical data

| Nominal voltage | 12.8 V |
|---|---|
| Chemistry | Lithium iron phosphate (LiFePO4) |
| Capacity | 120 Ah |
| Energy | 1,536 Wh |
| Starting current | 1,600 A |
| Maximum continuous current | 200 A |
| Size | BCI group 31 |
| Charging voltage | 14.6 V |
| Maximum charging current | 120 A |
| Recharge with GENIUS10 | 12 h |
| Recharge with GENIUSPRO25 | 4.8 h |
| Recharge with GENIUSPRO50 | 2.4 h |
| Cycle life | 2,000 cycles (100% DoD) / 4,000 cycles (80% DoD) |
| Series or parallel connection | Up to 4 units (up to 48 V in series) |
| Operating temperature | -20 °C to 50 °C |
| Charging temperature | -10 °C to 50 °C |
| Storage temperature | -20 °C to 50 °C |
| Protection | IP65 |
| Dimensions (L x W x H) | 330 x 173 x 218 mm |
| Weight | 14.97 kg |

## Frequently asked questions

### Is this a starting or a service (leisure) battery?

Dual purpose: it can start the engine and also work as a service battery, handy on boats with a single battery. On boats with two circuits the ideal is one starting battery and one service battery.

### In what position can it be installed on the boat?

Being lithium, it is sealed and does not spill: it can be mounted tilted (never upside down) and copes well with vibration and wave impacts. Secure it firmly and keep the terminals away from water.

### What are the measurements of the NLX31 model?

Dimensions (length × width × height) are 330×173×218 mm — also written as 330x173x218 mm — following the European DIN standard. Always measure the space in your boat before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.


## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012.

→ https://baterias.com/gb/technical-team

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*baterias.com — Automotive batteries · 2026-11-05*